package cn.matl.servlet;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

public class HelloServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //this.getInitParameter();  初始化参数
        //this.getServletConfig();  Servlet配置
        //this.getServletContext(); Servlet上下文
        ServletContext context = this.getServletContext();

        String username = "蕾蕾";
        context.setAttribute("username",username); //像context中放数据

        System.out.println("Hello");
    }
}
